post_install() { post_upgrade; } post_upgrade() { sudo ln -s /opt/brother/Printers/MFCL2700DN/cupswrapper/brother_lpdwrapper_MFCL2700DN /usr/lib/cups/filter/ sudo ln -s /opt/brother/Printers/MFCL2700DN/cupswrapper/brother-MFCL2700DN-cups-en.ppd /usr/share/ppd/cupsfilters/ echo "Restart CUPS (sudo systemctl restart org.cups.cupsd.service) to load the new files" echo "You can now register your new printer using the web interface at:" echo " http://localhost:631/" } pre_upgrade() { pre_remove; } pre_remove() { sudo rm /usr/lib/cups/filter/brother_lpdwrapper_MFCL2700DN sudo rm /usr/share/ppd/cupsfilters/brother-MFCL2700DN-cups-en.ppd }